Calculation of the Tangential View of an H-Alpha Intensity Profile in the Large Helical Device

Author

Shoji, Mamoru

Author_Institution

Dept. of Helical Plasma Res., Nat. Inst. for Fusion Sci., Toki, Japan

Volume

39

Issue

11

fYear

2011

Firstpage

2450

Lastpage

2451

Abstract

A tangential image of an H-alpha intensity profile in a large helical device (LHD) plasma is investigated by a neutral particle transport simulation using a detailed 3-D grid model including the geometry of the helical plasma and the vacuum vessel. The calculated image of the H-alpha intensity profile calculated by the simulation quite agrees with the observed image, which strongly suggests that there is no significant abnormal neutral particle sources in typical plasma discharge operation in LHD.

Keywords

discharges (electric); magnetic traps; plasma devices; plasma simulation; plasma transport processes; H-alpha intensity profile; abnormal neutral particle sources; detailed 3D grid model; helical plasma geometry; large helical device plasma; neutral particle transport simulation; plasma discharge; tangential image; vacuum vessel; Cameras; Coils; Magnetic resonance imaging; Plasmas; Solid modeling; Superconducting magnets; Toroidal magnetic fields; Cameras; Monte Carlo methods; charge coupled devices; plasmas; simulation;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2011.2160550

Filename

5975245